International scientist mobility and the locus of knowledge and technology transfer

Despite the growing interest of scholars and policymakers to better understand the determinants for researchers in public science to transfer knowledge and technology to firms, little is known how temporary international mobility of scientists affects both their propensity to engage in knowledge and technology transfer (KTT) as well as the locus of such transfer. Based on a sample of more than 950 German academics from science and engineering faculties, we investigate how the duration and the frequency of scientists’ visits at research institutions outside their home country affect KTT activities. We find that most mobile scientists engage in KTT to firms both in the host and in their home country, suggesting that KTT activities to firms abroad do not substitute or crowd out, but complement KTT to firms in the home country. We further find that the longer research visits abroad are, the higher the likelihood that scientists engage in KTT to firms, again both in the host and the home country. However, the more frequently scientists visit institutions abroad, the more likely they are to engage in KTT to firms only in their home country. Our results therefore provide evidence for the benefits of “brain circulation”. The article contributes to the growing strand of the literature on scientist mobility and on the determinants of industry-science linkages at the individual level.     

关于IEC62368-1对我国音视频、信息及通讯产品安全认证的影响研究

随着音视频设备和信息技术设备之间的界限及差异愈来愈模糊,新的音视频、信息与通讯设备的安全标准IEC 62368-1于2010年1月10日应运而生,该标准引入了防止潜在危险的安全工程（简称HBSE）的全新理念,并提出了能量危险等级和安全防护等级,IEC62368的制定和发展为我国国标GB 4943和GB 8898的发展指明了方向,认证企业及厂商需与相关部门一起做好标准的过渡及试验、认证工作。     

浅谈数字化智能变电站工程调试关键技术——以南方电网220kV长征变电站为例

结合南方电网220kV长征变电站的工程实例,在分析数字化智能变电站工程调试特点的基础上,探究了基于IEC61850的变电站单体调试、过程层设备联调、系统调试等关键调试技术。提出的数字化智能变电站调试方案实用性强,可为智能变电站工程的现场调试提供借鉴。     

智能变电站分阶段改造方法的研究

21世纪初,智能电网(Smart Grid)概念的提出为全世界电力工业开辟了新的发展空间。智能变电站作为智能电网的物理基础,将贯穿智能电网建设的整个过程。本文对分阶段改造方案进行探讨,并与一般方案进行比较。最后对建设智能变电站带来的经济效益进行了探讨。     

家用电器模糊控制开发平台的研究

本文对家用电器模糊控制开发平台进行分析与设计。平台利用IEC 61131—7中定义的FCL（Fuzzy Control Language）语言描述整个模糊控制系统，并且同时可自动生成标准C语言或其他高级程序设计语言描述的模糊控制系统的程序代码。应用该家用电器模糊控制开发平台大大提高了模糊控制系统设计质量，缩短设计时间。     

Betreuung und Bewertung wissenschaftlicher (Doktor-)Arbeiten

Das UnivG 2002 sieht keine ausdrücklichen Bestimmungen betreffend die Betreuung und Beurteilung wissenschaftlicher Arbeiten mehr vor, sondern stellt die Regelung dessen dem autonomen Satzungsgeber anheim. Bei der Gestaltung der betreffenden Satzungsinhalte spielen Aspekte der Gesetzeskonformit?t, Treffsicherheit und Sachgerechtigkeit eine wesentliche Rolle. Dies gilt vor allem für Dissertationen, die eine besondere Betreuungs- bzw Beurteilungsintensit?t aufweisen sowie vermehrten Zulauf aus dem FH-Bereich verzeichnen und jüngst zunehmend ins Zentrum hochschulpolitischer Reformerw?gungen gerückt sind. Vor diesem Hintergrund kommt auch der Frage nach der M?glichkeit und Zul?ssigkeit externer Dissertations-Betreuer besondere Bedeutung zu.     

On research efficiency: A micro-analysis of Dutch university research in Economics and Business Management

We argue that efficiency assessments of academic research should focus on micro-units of research production rather than on conventionally employed (aggregated) macro-units, and show that such a detailed analysis of research performance provides interesting insights. In addition, we propose a non-parametric methodology that is specially tailored for analyzing the productive efficiency of research: it starts from a specification of the managerial objectives of research activities while imposing minimal structure on the (typically unknown) production technology. We illustrate our points by assessing the productive efficiency of research in Economics and Business Management Faculties of Dutch universities. Next to measuring productive efficiency, we look for specific patterns in efficiency distributions over universities, years and areas of specialization. In addition, we investigate the impact of external funding and the size of research programs on academic research efficiency. We argue that our analysis has some interesting policy implications. Most notably, our results show that a micro-analysis of research efficiency may yield a more effective allocation of the limited financial resources that are available.     

基于IEC 61131-3语言的电机控制系统设计

基于IEC 61131-3国际标准化编程语言,以三相交流电机为控制对象,设计了电机控制系统。实现了三相交流电机的启保停、正反转和顺序启动的控制、监控功能和动画效果。测试结果表明,该系统控制有效、性能优良。本系统针对实验教学改革,适用于开展大学生课外科技活动、拓展实践能力。     

The effect of school inputs on labor market returns that account for selective migration

In this paper, I estimate the effect of state school inputs on labor market returns to schooling. The method follows Card and Krueger (1992) and Heckman et al. (1996), but I extend their analysis in two ways. First, I correct state-level returns to schooling for selective migration, adapting a method from Dahl (2002). Second, I use more recent data and assess the degree to which the 1999 labor market capitalized school inputs (with 2000 Census data). Higher state-level school inputs are associated with higher returns to schooling after correcting for selective migration. These positive effects are present in all Census years I study.